Hydraulic antivibratory sleeves
US5172893A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1991 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Mar 14, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F13/16
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic antivibratory sleeve comprises, on the the one hand, two rigid tubular frames (1, 2) with an axis X, one surrounding the other, joined together by an elastomer body (3) shaped so as to form therewith at least two sealed pockets (A, B) diametrically opposite in a direction Y perpendicular to axis X and communicating together through an narrow channel (4). The assembly formed by these pockets and the channel is filled with liquid. The sleeve includes, on the other hand, at one of its axial ends, an annular work-chamber (C) defined partially by a resilient wall (7) resisting axial compression. This sleeve further comprises at its other axial end an annular compensation chamber (D) defined partially by a flexible membrane (12), a narrow channel (13) connecting the two annular chambers directly together and the assembly formed by the channel and the two chambers being filled with liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.